Just a wild guess, have you checked the knock sensor circuit and Hall sender. Either one can throw the timing off....
Very easy to check and worth the try... -----Original Message----- From: Patrick Austin [mailto:[email protected]] Sent: Wednesday, August 22, 2001 6:36 PM To: [email protected] Subject: Going insane: car still runs like crap. OK...revised list of what's going on: Car makes fine power RIGHT after startup, for maybe 15-25 seconds or until the car is warm (when starting from cold). After that 15-25 seconds, it has absolutely no power. None at all. If I unplug the DPR, the car runs like a champ. It pulls to redline. This makes me think that it's not a fuel pump issue, as it's getting enough fuel to make lots of power up at high RPM when the DPR is unplugged. Also, it seems to run just as bad with a full tank of gas as with a near-empty one. If I unplug the air mass sensor (other side of airbox from DPR) and the O2 sensor, this has no effect whatsoever on how the car runs, with or without the DPR. The DPR is BRAND NEW. It was doing this very same thing before the DPR was replaced. However, immediately after replacement, the car didn't have this problem. So something they did cured it very temporarily. About three days. It sat for two weeks before I picked it up...maybe the cure had something to do with sitting around a long time? I thought it might be the TT chip I installed, but I just re-installed the stock one, and it made no difference. Could someone explain how a transfer pump could cause these symptoms? I'm also curious about the time sensitivity of the running problems. Why does it run OK immediately after startup, even if it's only turned off for a second or two? The O2 sensor wouldn't have a chance to get cold in that time period. A vacuum leak wouldn't cause a time-sensitive running problem, would it? ************** Patrick Austin [email protected] (617)782-9115 ************** _____________ List Sponsor: http://www.netsville.com To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message See us on the web at http://www.a2-16v.com Visit the 16V Homepage at http://www.gti16v.org _____________ List Sponsor: http://www.netsville.com To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message See us on the web at http://www.a2-16v.com Visit the 16V Homepage at http://www.gti16v.org
